计算机系统的运行不能离开主存储器，也被称为内存、主存、基本主存，及随机存储处理器(RAM)，或简单记忆体。

A computer system could not operate without main memory, also called internal memory, primary memory, primary storage, random access memory (RAM), or simply memory.

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体全息存储器因其存储密度高、存储容量巨大、存取速度极快的独特优势，可望满足这种需求。

Owing to the advantages in high storage capacity, fast data transfer rate, and short access time, volume holographic memories (VHM) are considered to meet the needs.

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参考答案：有两种类型的记忆体晶片：只读存储器(ROM)和随机访问存储器(RAM)。

There are two types of memory chips: read only memory (ROM) and random access memory (RAM).

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